References
- N. Jacobson Lie Algebras Interscience New York 1962
- A. Loutsiouk On extreme vectors of Verma modules over complex semisimple Lie algebras International Journal of Algebra 2008 2 771 778
- D. Želobenko Operators of discrete symmetry for reductive Lie groups Izvestia AN USSR, ser. matem 1976 40 1055 1083
- D. Želobenko Compact Lie Groups and Their Representations American Mathematical Society Providence , R.I 1973